Windshield cleaner arm



July 5, 1938 A. RAPPL 2,1 ,802

WINDSHIELD CLEANER ARM Filed March 25, 1935 INVENTOR 95010 Rappl,

ATTORNEYS humus, s, 1938 2,122,802 wnvnsmsnn onasnaa ARM Anton Rappl. Buifalo. N. Y., assignor to Trico Products Corporation ration Buifalo, N. Y., a corpo- Application March 25, 1935, Serial No. 12,929 11 Claims. (Cl. 15-250) This invention relates to a windshield cleaner and particularly to the wiper carrying arm.

Windshield cleaners which are nowin use have their wiper carrying arm of a definite length and it is frequently necessary to modify the length of g the arm or use a shorter blade in order to adapt the cleaner for the particular installation. Adjustable arms have heretofore been proposed, wherein the plural arm sections are secured together through hook and eye connections, one section of the arm being provided with a longitudinal series of eyes or openings in which the companion section may be selectively hooked for obtaining the desired length of the wiper arm. Such a construction is disclosed in Letters Patent, No. 1,920,145 granted July 25, 1933, to Henry Hueber for improvements in a wiper arm and mounting therefor.

The present invention has for its object to pro- 20 vide an adjustable wiper arm which is practical in design, easily manufactured and efficient in the performance of its function, and further, one wherein a given or set adjustment is secured in a simple manner.

In the drawing, Fig. l is a side elevation of a wiper and its carrying arm in assembled relation, disclosing one embodiment of the present invention.

Fig. 2 is a transverse sectional view through the adjustably connected sections of the arm.

Fig. 8 is a side elevation of a slightly modified arm.

Fig. 4 is a fragmentary view depicting the manner of connecting the arm sections together. and

Fig. 5 is a view similar to Fig. 2 but being a cross section through the arm parts of Fig. 4 when in fully assembled relation.

Referring more particularly to the drawing, the wiper carrying arm I has its outer blade sup- 4 porting end under a resilient urge to press the wiper blade yieldingly against the windshield glass in the usual well known manner to thereby obtain the desired wiping contact with theglass. The arm shank may be formed of sheet metal and have its outer or free end portion flattened, as in Figs. 1 and 2, to more readily receive a serpentine shape for providing a series of shoulders l and recesses Or, the arm shank may be formed of a stiif wire, as at i in Fig. 3, and provided with a series of shoulders 4' and recesses I. thereby designing a hill and dale formation in a plane substantially normal to the windshield surface;

The adjustable arm section 2 is preferably struck up from sheet metal and has a blade attaching part 0- and a rearwardly extending looking portion M which is connected to the blade attaching part by a transverse wall or off-set H. The attaching part 6 is designed for attachment to the wiper blade 8 in a suitable manner, such 5 as by the slot I in the part 8 to receive the attaching fin 8 on the blade. Adjacent the juncture of the off-set II and the part Hi, there is located an opening I! through which the serpentine portion of the arm is threaded until the de- 10 sired composite arm length is obtained, whereupon the locking portion i ii is swung downwardly against the arm shank, from the position shown in Fig. 4 to that shown in Figs. 1, 2 and 5, where it is secured by the opposed side flanges I! that 15 snugly and resiliently embrace the interposed arm shank portion. When the locking portion has been folded down over the arm shank, the oil-set i I is made to seat in a selected one of the recesses Ii (5') where it is secured against un- 20 authorized longitudinal displacement on the arm shank. This securement against longitudinal displacement is insured by the oiT-set Ii and by the confining shoulders 4 (4') above and below the same. The adjusted relationship of the arm 5 sections is maintainedby the frictional clamping of the flanges I3 over the serpentine or shank portion, as shown somewhat exaggerated in Figs.

2 and 5.

By reason of the present construction, the desired length of the arm may be readily obtained by an adjustment which is practical and durable and which is secured against accidental loss of the adjustable section. With the adjustment afforded by this arm, the cleaner may as readily be adapted for use with varying lengths of wipers, and should the serpentine end of the shank be extended outwardly over the blade attaching part 6. no interference will be had with the efficient operation of the wiper.

What is claimed is:

1. An adjustable wiper carrying arm having.- one section formed with a series of hill and dale formations at one end portion thereof in a plane substantially normal to the window surface,- and 45 a companion section bodily swingable into and out of interlocking engagement with the first section, said companion section having a rigid locking part integral therewith and engageable with the hill and dale formation of the first sec- 50 tion.

2. An adjustable wiper arm having one section provided with a serpentine portion at one end portion thereof, a second section bodily swingable thereover and having a part selectively interlock-- 55 able with a part of the serpentine portion, and means on the second section for securing such interlocking engagement.

3. An adjustable wiper arm having one section provided with a serpentine portion, a second section secured thereto for adjustment, said second section having a blade attaching part and arm embracing part, said parts being joined by an of!- setting portion, said ofisetting portion having a part interlockably engageable with said serpentine portion at a selected point.

4. An adjustable wiper arm having one section provided with a shank having a longitudinal series of shoulders, a second section having a blade attaching part and a shank embracing part, said second section being provided with an opening between said blade attaching part and said embracing part for receiving the shank, the edge of the opening being selectively engaged withsaid shoulders.

5. A wiper arm having two adjustably connected sections, one section having a shank provided with a longitudinal series of shoulders, the companion section having a blade attaching part and a shank engaging part said companion section having a shank receiving opening with the edge thereof engageable with a selected shoulder of the shank upon relative pivotal movement be tween the sections, said shank engaging part having a portion foldable on to the shank and engaging the same to hold the two sections against relative pivotal movement to thereby secure the edge engaged with the selected shoulder.

6. A wiper arm having two adjustably connected sections, one section having a shank provided with a longitudinal series of shoulders, the companion section having a blade attaching part and a shank engaging part with a shank receiving opening between said parts, said companion section having a part selectively interengageable arm in which a shank is provided with a longitudinal series of shoulders, comprising a sheet metal member of channeled formation oflset intermediate its ends so.that the opposite end portions thereof lie in diflerent planes, the intermediate oiisetting portion having a part adapted for selective interlock with one or the shoulders and one end portion being provided with wiper attaching means while the opposite end portion is formed to detachably fasten itself to the shank of the wiper arm for securing the interlock.

9. A'wiper attaching section for an adjustable arm, comprising a sheet metal member of channeled formation ofiset intermediate its ends so that the opposite end portions thereof lie in different planes, one end portion being provided with wiper attaching means and the opposite end portion being formed for detachable embrace with a companion section of the wiper arm to secure such opposite end portion to the latter, said sheet metal member being provided with an opening in the intermediate oilsetting portion to receive such companion arm section and having a part interlockable with a shoulder on the companion section.

10. An adjustable section for a wiper arm, comprising a sheet metal member of channeled formation oilset intermediate its ends whereby the opposite end portions lie in different planes, one end portion being provided with an opening to receive anattaching part of a wiper blade, said member having an opening in its opposite end portion adjacent the offset through which a com-- panion section of the wiper arm may extend to overlie the opening of said end portion, and means for detachably interlocking with the companion section to secure the channeled member thereto.

11. An adjustable wiper arm for windshield cleaners, comprising a section having a shank formed with a shoulder, a second section having a blade attaching part and a shank embracing part, the two parts being integrally joined by an offsetting portion having an opening therethrough to receive the shank of the first section, the second section having a transverse edge engageable with the shoulder to secure the two sections against relative longitudinal movement, and said shank embracing part being of channeled formation with the sides of the channel resiliently embracing the shank to frictionally and detachably hold the transverse edge engaged with said shoulder.

ANTON RAPPL. 

